Get it:

Common Problems

You need to use Python 2.x, not Python 3.x - the latter is not compatible with the former and won't work. If you get the error

TypeError: startswith first arg must be bytes or a tuple of bytes, not str

this is your problem. (You can have both versions installed at once.). 2.7.2 should be fine.

Usage:

In simple terms you want 'python unrpa -m -p /path/to/extract/to /file/to/extract.rpa'. Most Linux distos should do it perfectly. If Python 3.x is the default version of Python (as in Arch Linux), then use 'python2' instead of 'python'.